Calling Libmagic dll function return 126 error

Question

I'm working on a project that need to use lib magic library to detect file mime type, I'm using 64 Bit version for windows (see: https://github.com/nscaife/file-windows) my project itself is C dll which I will call it from python. Loading the library is working fine, however when I use GetProcAddress() to access some function, it return NULL and the GetLastError() function return 126. See my code:

int DLL_EXPORT mag()
{
   char *actual_file = "test.db";
   const char *magic_full;
   HMODULE hModule = LoadLibrary("libmagic-1.dll");
   if(hModule == NULL) //No problem here
    return GetLastError();
   magic_t (*t0)(int) = (void *) GetProcAddress(hModule, "magic_open");
   const char (*t)(magic_t, const char *)  = (void *) 
   GetProcAddress(hModule, "magic_file");
   if(t0 == NULL && t == NULL);
    return GetLastError();
   magic_t magic_cookie;
   magic_cookie = t0(MAGIC_MIME);
   magic_full = t(magic_cookie, actual_file);
   return 0;
}

What is the problem Here?